Cambridge IGCSE Chemistry · Syllabus 0620 · Chemical Reactions
Collision Frequency
What is Collision Frequency?
The number of collisions between reacting particles per unit time. It rises when there are more particles in a given volume, as when a solution is made more concentrated or a gas is compressed, and it is one of the two routes by which any factor can change a reaction rate.
This definition is part of the Chemical Reactions chapter in Cambridge IGCSE Chemistry.